Tiny Black Tomatoes: Pollination Failure, Not Disease

When Baby Tomatoes Turn Black and Shrivel

You see many green tomatoes, but some turn black at a tiny size—like blackberries. It's not blossom-end rot (which affects the bottom of ripening fruit). The culprit? Poor pollination.

Why Pollination Fails

• Lack of pollinators: Bees, wind, or vibration needed to release tomato pollen.
• Excess humidity or heat: Pollen becomes sticky or sterile above 90°F (32°C) or in very humid conditions.
• Dense foliage: Blocks air movement and pollinator access.

Fixes for Better Fruit Set

1. Improve air circulation: Prune lower leaves, stake or cage plants upright.
2. Attract pollinators: Plant herbs (basil, oregano) or flowers (marigold, zinnia) nearby.
3. Hand-pollinate: Gently shake plants midday or use a small brush to transfer pollen between flowers.
4. Water at the base: Wet foliage discourages pollinators and promotes disease.

What About the Black Fruit?

Remove them—they won't develop. The plant will redirect energy to properly pollinated fruit. You already got a red tomato; more will follow with better conditions.

Blackening at the blossom end of ripening fruit is blossom-end rot (calcium/water issue). But tiny black fruit? That's a pollination problem—solvable with the steps above.